Trading card size
Trading Card Size: 63.5 × 88.9 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.
- Millimetres
- 63.5 × 88.9 mm
- Centimetres
- 6.35 × 8.89 cm
- Inches · rounded to 4 decimals
- 2.5 × 3.5 in
- Aspect ratio · width:height
- 5:7 (1:1.4)
Common uses
This format suits collectible-card designs, homemade game cards and small illustrated swaps. Match a sleeve to the finished card and its thickness.
How it compares
Bridge playing card is smaller in area. Bookmark is larger in area. These formats have their own proportions; halving a sheet does not necessarily produce the next size.
Cut a square for origami
The largest square from a flat rectangle this size is 63.5 × 63.5 mm (2.5 × 2.5 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 25.4 mm strip, then open the triangle.
For origami, use thin uncoated paper with these dimensions instead of thick or coated stock. Try the beginner origami dog with your square, or see how to prepare square paper.